HP EliteBook 840 G3 Intel Core i7-6600U 2.60GHz 16GB. RAM 256GB SSD Windows 10 | eBay
HP EliteBook 840 G3 Core I5-6300U 2.4GHz SSD 180Gb RAM 8Gb with HP dock station [Y1Y02US#ABA] - $599.00 : Professional Multi Monitor Workstations, Graphics Card Experts
How to Tear Down & Upgrade an HP EliteBook 840/850 G3 Laptop RAM & SSD - YouTube
HP EliteBook 840 G3 Business Laptop, Intel Core i7-6th Gen. CPU, 16GB RAM, 512GB SSD Hard, 14.1 inch Display, Windows 10 Pro